long_extras.h – support functions for signed word arithmetic¶
Properties¶
-
size_t
z_sizeinbase
(slong n, int b)¶ Returns the number of digits in the base \(b\) representation of the absolute value of the integer \(n\).
Assumes that \(b \geq 2\).
Random functions¶
-
mp_limb_signed_t
z_randtest
(flint_rand_t state)¶ Returns a pseudo random number with a random number of bits, from \(0\) to
FLINT_BITS
. The probability of the special values \(0\), \(\pm 1\),COEFF_MAX
,COEFF_MIN
,WORD_MAX
andWORD_MIN
is increased.This random function is mainly used for testing purposes.
-
mp_limb_signed_t
z_randtest_not_zero
(flint_rand_t state)¶ As for
z_randtest(state)
, but does not return \(0\).
-
mp_limb_t
z_randint
(flint_rand_t state, mp_limb_t limit)¶ Returns a pseudo random number of absolute value less than
limit
. Iflimit
is zero or exceedsWORD_MAX
, it is interpreted asWORD_MAX
.